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NEW YORK (CBSNewYork) — If you’re reading this right now, chances are you’re indoors – and you might want to stay there if your air conditioner is working.

Temperatures Saturday will be the hottest of the next seven days, and hotter even than Friday, CBS 2 Meteorologist Vanessa Murdock reported. Highs are expected in the low and mid-90s, with heat indices making it feel like over 100 degrees – particularly for portions of New Jersey.

The temperature was 91 degrees at 4 p.m. The forecast high for the day was 92 degrees.

Only the slightest chance of a shower or thunderstorm is expected Saturday evening.

Heat advisories remain in effect until 8 p.m. Sunday for the five boroughs of New York City and much of New Jersey.

As CBS 2’s Dave Carlin reported, coping with the heat often has not been easy.

Maria Feliciano’s apartment has no air conditioning.

“I can’t even breathe!” she said.

Feliciano had to escape to the lobby of her building to get relief from a small fan and bottled water.

Experts emphasize that drinking plenty of water is imperative in a heat wave, along with limiting strenuous activity, wearing light-colored clothing, using sunscreen, and staying indoors if possible.

Those who had to be outside in a heat wave decided to go with a flow and get wet. Crowds flocked to Brighton Beach in Brooklyn on Saturday morning, CBS 2’s Janelle Burrell reported. Many people arrived at the beach early in the morning, and planned on staying.

“Amazing, wonderful weather – especially early in the morning,” said Anna Pines, who was out before 8 a.m. with her young son, Matthew.

And some people are willing to brave the heat for their exercise routines. As WCBS 880’s Sophia Hall reported, Cheryl was like Wonder Woman in Lido Beach, Long Island, as she ran five miles with no water.

She said her workout will be a little bit shorter than her usual seven miles, but she might not even slow down and walk from time to time.

“It all depends. I’m definitely going slow,” she said.

Also in Lido Beach, Margaritt said she should have been jogging earlier than 9 a.m. But she said she is fine off as long as she has a lot of Smart Water.

“Nothing stops us joggers, you know? Some people think we’re nuts,” she said. “But it kind of jumpstarts the day for me.”

But strenuous activity isn’t a good idea for everybody. Doctors have been seeing cases where heat exhaustion and even more severe conditions sneak up on people — especially those with chronic conditions and senior citizens.

“Anytime you start feeling ill in the heat, feeling weak, nausea, feel like you may pass out, those kinds of things, it’s important at that moment to get out of the heat to get into a cool environment,” said Dr. Jeffrey Rabrich of St. Luke’s Hospital.

And if you’re looking for relief, you might have to consider a trip to the North Pole. Murdock says the 90s are not going anywhere, with highs expected at 91 on Sunday, 90 on Monday and Tuesday, and 91 on Wednesday.

Cooling centers such as libraries and community buildings throughout the five boroughs will be open through Sunday — for anyone looking for a place to stay cool.